Variable Interest Entity Disclosure (Details) - Variable Interest Entity, Primary Beneficiary [Member] - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Total assets	[1]	$ 1,030,775	$ 1,012,199
Total equity		372,942	362,585
Total liabilities and equity		1,030,775	1,012,199
Net Real Property Owned
Variable Interest Entity [Line Items]
Total assets		1,002,137	989,596
Cash and cash equivalents
Variable Interest Entity [Line Items]
Total assets		12,308	10,501
Receivables and other assets
Variable Interest Entity [Line Items]
Total assets		16,330	12,102
Secured Debt
Variable Interest Entity [Line Items]
Liabilities		471,103	450,255
Accrued expenses and other liabilities
Variable Interest Entity [Line Items]
Liabilities		14,832	13,803
Redeemable noncontrolling interests
Variable Interest Entity [Line Items]
Liabilities		$ 171,898	$ 185,556

[1] Note that assets of the consolidated VIEs can only be used to settle obligations relating to such VIEs. Liabilities of the consolidated VIEs represent claims against the specific assets of the VIEs.